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Effects of Oscillations in the Mainstream on Film Cooling at Various Blowing Ratios
Volume 5A: Heat Transfer, 2017The objective of this study is to understand the effects of flow oscillations in the mainstream and film cooling jets on film cooling at various blowing ratios (0.5, 0.78, 1.0 and 1.5). These oscillations could be caused by the combustion instabilities. They are approximated in sinusoidal form for the current study. The effects of different frequencies
Seung Il Baek, Savas Yavuzkurt
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Sweeping Jet Film Cooling at High Blowing Ratio on a Turbine Vane
Volume 5B: Heat Transfer, 2019Abstract Experimental and numerical investigations were conducted to study the effects of high blowing ratios and high freestream turbulence on sweeping jet film cooling. Experiments were conducted on a nozzle guide vane suction surface in a low-speed linear cascade.
Mohammad A. Hossain +3 more
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Journal of Genetics, 1948
1. The sex ratio in pure-line cultures of strains of a white-eyed mutant ofCalliphora erythrocephala varied from strain to strain. The average for 49, 161 flies was 46% females and 54% males. Different strains varied in the ratio of females to males. The lowest was 40% females to 60% males and the highest 50% females to 50% males. 2.
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1. The sex ratio in pure-line cultures of strains of a white-eyed mutant ofCalliphora erythrocephala varied from strain to strain. The average for 49, 161 flies was 46% females and 54% males. Different strains varied in the ratio of females to males. The lowest was 40% females to 60% males and the highest 50% females to 50% males. 2.
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Effects of Blowing Ratio on Multiple Shallow Angle Film Cooling Holes
Applied Mechanics and Materials, 2012This paper presents the investigation on the effects of the blowing ratio of multiple shallow angle film cooling holes. Multiple film cooling holes having a shallow hole angle (θ = 20°), arranged to perform in-line hole configuration has been considered in the present study.
Kamil Abdullah, Ken Ichi Funazaki
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Film Cooling Jet Under Varying Blowing Ratio
Proceedings of Global Power & Propulsion SocietyThe blowing ratio (M) determines the coverage and extent of attachement/detachment of a film cooling jet over and to a downstream flat endwall (or turbine blade surface). However, insight into their alteration due to the blowing ratio has been largely inconclusive. Therefore, we aim to elucidate its role.
Marc Gomez-Olive Fernandez +3 more
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ASME 2024 Heat Transfer Summer Conference
Abstract Effusion cooling has emerged as an advanced cooling technique for applications that function at high temperatures, especially in gas turbines. Although this technology has shown higher cooling effectiveness compared to traditional cooling schemes, it is not yet considered a sustainable application for turbine stators and rotors ...
Omar Deyab Aly +2 more
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Abstract Effusion cooling has emerged as an advanced cooling technique for applications that function at high temperatures, especially in gas turbines. Although this technology has shown higher cooling effectiveness compared to traditional cooling schemes, it is not yet considered a sustainable application for turbine stators and rotors ...
Omar Deyab Aly +2 more
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Influence of Blowing Ratio on Flow Structures of an Inclined Jet in Crossflow
2015This study investigates by experiment the influence of the blowing ratio (BR) on the flow structures of an inclined turbulent jet in crossflow (JICF). The experiment was conducted in a water tunnel with the jet issuing from a round nozzle inclined at streamwise-oriented 35o, practically relevant to the film cooling configuration.
L. Jia, C. Dai, J. Zhang, J. Mi
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Head & Neck, 2009
AbstractBackground.Our objective was to evaluate the value of the blowing test to measure the speech and swallowing function after resection of oral or oropharyngeal cancer.Methods.Speech and swallowing functions of the patients after surgical resection of oral or oropharyngeal cancer were assessed by a speech intelligibility test, blowing time ...
Chieri, Katoh +7 more
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AbstractBackground.Our objective was to evaluate the value of the blowing test to measure the speech and swallowing function after resection of oral or oropharyngeal cancer.Methods.Speech and swallowing functions of the patients after surgical resection of oral or oropharyngeal cancer were assessed by a speech intelligibility test, blowing time ...
Chieri, Katoh +7 more
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Change of the Orbital Volume Ratio in Pure Blow-out Fractures Depending on Fracture Location
Journal of Craniofacial Surgery, 2013The purposes of this study were to observe bony orbital volume (OV) changes in pure blow-out fractures according to fracture location using a facial computed tomographic scan and to investigate whether the OV measurements can be used as a quantitative value for the evaluation of the surgical results of the acute blow-out fracture.Forty-five patients ...
Sang Ah, Oh +3 more
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Volume 4: Heat Transfer; Electric Power; Industrial and Cogeneration, 1998
This paper presents the experimental investigation of the flow and the numerical analysis of the flow and heat transfer in a turbine guide vane with showerhead cooling for two different blowing ratios. The aerodynamic results are compared with those of the experiments.
Dieter E. Bohn +3 more
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This paper presents the experimental investigation of the flow and the numerical analysis of the flow and heat transfer in a turbine guide vane with showerhead cooling for two different blowing ratios. The aerodynamic results are compared with those of the experiments.
Dieter E. Bohn +3 more
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